This unit was another part-mounted regiment numbered among the substantial Belgic auxiliary force of governor Petilius Cerialis. They were listed as the late-fourth century occupants of the Wallsend fort in the Notitia Dignitatum, also evidenced by a couple of altarstones.

Evidence for the Cohort in Britain

1. Burn 95; CIL XVI.48; military diploma, dated January 19th AD103.
2. Burn 100; CIL XVI.65; military diploma dated July 17th AD122.
3. L'Année Épigraphique 1997.1779b; diploma dated c.AD126.
4. L'Année Épigraphique 1997.1001; diploma dated 27th February AD158.
5. Wallsend (RIB 1299 altar; 1300 altar; Notitia Dignitatum).